Eurobodalla council employee Garry Shaw was filming as he and his family walked past Raja's Bar and Restaurant in Kuta on Saturday night when he captured on tape a man now believed to be a suicide bomber making his way between the tables.

A split second later the bomb exploded, ripping through the restaurant. Five minutes later, that was followed by a second bomb in a cafe at Jimbaran beach, 30km away. Three minutes after that, up to two suicide bombers detonated their packs at a second restaurant, also at Jimbaran.

Twenty-two people are dead as a result of the attacks, at least two of them Australians. Among the 90 injured were 15 Australians, two of them from Batemans Bay.

Mr Shaw, 45, and his mate George Drake, 58, were hit by tiny flying ball bearings, believed to have come from the bomb.

One ball bearing punctured Mr Drake's neck, coming to rest next to vertebrae in his neck. Mr Shaw pressed his finger on the hole in Mr Drake's neck to stem the bleeding and the ball bearing was later removed in surgery.

A ball bearing passed through Mr Shaw's arm and lodged in the muscle in his back.

A second ball bearing was sitting on the surface of the skin on his hip.

Doctors treated Mr Shaw with antibiotics but left the ball bearing in situ.

Mr Drake said he, his family and friends survived because they were protected from the main force of the blast by columns alongside the building.

Both families were taken by a Hercules flight to Darwin on Monday.

Still traumatised by the incident, they plan to spend some time recovering before returning to Batemans Bay.

"There are lots of people worse off than us," Mr Shaw said. "We are the lucky ones."

"We were two steps away from the restaurant," Mrs Drake told a journalist.

"All we heard was this really loud explosion and glass shattering everywhere."

Most of the group saw the air light up as the bomb exploded and the families' two teenage boys - Daniel Shaw and Andrew Drake - were hit by flying debris and knocked off their feet.

Mrs Drake's first reaction was to duck, then run, and tell everyone to run as fast and as far as possible. She didn't realise immediately that it was a bomb.

"It all seems in slow motion," Mrs Drake reportedly said. "We just heard this loud bang and then just ran.

"We just ran and told everyone else to run . . . keep running. It was all pretty horrendous."

Mr Shaw said people were screaming and scrambling to escape, with the injured lying on the ground.

Erica Shaw said she remembered seeing a bright explosion and the glass food cabinet shooting out as they walked past Raja's.

"That shot out and I ducked," she told the Bay Post.

"The noise of the bomb, that is something I won't forget. The whole thing was so surreal."

Teenager Daniel Shaw remembers the loudest noise he has heard and being hit by a flying chair. People trying to escape were stepping on him. His mate, Andrew Drake, came to his rescue after picking himself up from where he had been thrown among parked motorbikes.

"There was this huge bang and a flash from the corner of my eye," Andrew said.

In the scramble to escape, the families realised the boys were left behind. Mr Shaw ran back to find them but they had escaped to the other side of the street.

It was only in the taxi on the way to the medical centre that Mr Shaw even realised he had been hit.

"My concern was for George," he said.

Mr Drake was operated on in Denpasar but Mr Shaw left the hospital and returned to his hotel room.

"I figured there were people worse off than me," he said.

It was back at the hotel room that they realised the importance of the video footage Mr Shaw had taken.

Mr Shaw said it was originally thought that the man pictured moving between the tables was simply a waiter.

"I watched it again and the waiters had white shirts on, that bloke was in a black shirt and he was rushing," he said. "Usually when you walk into a restaurant you take your time."

When the video was played on a bigger screen, an Indonesian camera man noticed the man's backpack.

"Then I contacted the police," Mr Shaw said.

Indonesian police, aided by Australian detectives, are focusing part of their investigation on the amateur video footage.

Mrs Shaw said it had never entered her head that another bombing would happen in Bali.

She said the two families would spend some time trying to come to terms with the tragedy before returning home.

"We are fine one minute and then not the next," Mrs Shaw said. "You see something and you just break down.

"We just happened to be in the wrong place at the wrong time."